16980720 has 40 divisors (see below), whose sum is σ = 52640976. Its totient is φ = 4528128.

The previous prime is 16980709. The next prime is 16980751. The reversal of 16980720 is 2708961.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35137 + ... + 35616.

Almost surely, 2^16980720 is an apocalyptic number.

16980720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16980720 is an abundant number, since it is smaller than the sum of its proper divisors (35660256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16980720 is a wasteful number, since it uses less digits than its factorization.

16980720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70769 (or 70763 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 16980720 is about 4120.7669189121. The cubic root of 16980720 is about 257.0309177679.

The spelling of 16980720 in words is "sixteen million, nine hundred eighty thousand, seven hundred twenty".